Base assembly of voice coil motor and voice coil motor

ABSTRACT

The present disclosure provides a base assembly of voice coil motor and a voice coil motor. The base assembly includes a base body having a first elastic piece connecting area, a lower elastic piece disposed on the first elastic piece connecting area, and a first terminal disposed in the base body. The first terminal has: a first conductive part disposed in the base body; a first terminal connecting part disposed on one side of the first conductive part and extending toward a direction away from the first conductive part, wherein a part of the first terminal connecting part protrudes from the first elastic piece connecting area and is connected with the lower elastic piece; and an engaging part disposed on one side of the first terminal connecting part and extending toward a direction away from the first terminal connecting part.

CROSS REFERENCE TO RELATED DISCLOSURE

This application claims the priority benefit of Chinese PatentApplication Number CN202120320562.X, filed on Feb. 4, 2021, the fulldisclosure of which is incorporated herein by reference.

BACKGROUND Technical Field

The present disclosure relates to the technical field of voice coilmotor, particularly to a base assembly of voice coil motor and a voicecoil motor.

Related Art

FIGS. 1 to 3 are respectively a schematic diagram of a terminal, aschematic diagram of a base assembly, and a schematic diagram of thecutting process of the terminal of a voice coil motor in the prior art.As shown in the Figure, the base assembly of the voice coil motorincludes a terminal P1 and a base body P2. The terminal P1 is disposedin the base body P2. More specifically, by injection molding or thelike, the base body P2 is formed outside the terminal P1 and covers theterminal P1. Next, as shown in FIG. 3, after the base body P2 is formedoutside the terminal P1, a connecting part P10 between the terminal P1and a strip P3 is cut along the vertical direction D by a cutting jig.

In order to prevent the terminal P1 from shifting during the cuttingprocess, the base body P2 is usually disposed with a stepped part P20.Space may be provided by the stepped part P20 for a pressing jig P4 topress the terminal P1. When the cutting jig cuts the connecting partP10, the terminal P1 may be prevented from warping by pressing thepressing jig P4 against the terminal P1 on the stepped part P20.

However, as the size of the product becomes smaller and smaller, thedesign of the stepped part P20 of the base body P2 may not retain due tothe limited space. FIG. 4 is another schematic diagram of the cuttingprocess of the terminal in the prior art. As shown in the Figure, whenthe terminal P1 is not pressed by the pressing jig P4 during cuttingprocess, the terminal P1 may be pushed by the cutting jig and causewarping.

SUMMARY

The embodiments of the present disclosure disclose a base assembly ofvoice coil motor and a voice coil motor, in order to solve the problemof warping of the terminal due to no space for using the pressing jig inthe cutting process.

In order to solve the above technical problems, the present disclosureis implemented as follows.

In the first aspect, the present disclosure provides a base assembly ofvoice coil motor, including a base body having a first elastic piececonnecting area, a lower elastic piece disposed on the first elasticpiece connecting area, and a first terminal disposed in the base body.The first terminal has: a first conductive part disposed in the basebody; a first terminal connecting part disposed on one side of the firstconductive part and extending toward a direction away from the firstconductive part, wherein a part of the first terminal connecting partprotrudes from the first elastic piece connecting area and is connectedwith the lower elastic piece; and an engaging part disposed on one sideof the first terminal connecting part and extending toward a directionaway from the first terminal connecting part.

In the second aspect, the present disclosure provides voice coil motorincluding the base assembly mentioned as the first aspect and a coilassembly disposed on the base assembly. The coil assembly includes amagnet disposed on the first elastic piece connecting area; a conductivepillar electrically connected to the lower elastic piece; a framedisposed on the base body, wherein the frame is recessed to form anannular groove; a coil disposed in the annular groove and electricallyconnected to the conductive pillar; and an upper elastic piece disposedon the frame.

In the embodiment of the present disclosure, the first terminal is fixedin the base body by the engaging part. As a result, in the case ofwithout pressing by using the pressing jig, the first terminal may stillbe cut stably and prevented from warping. That is, the base assembly ofthe present disclosure is small. Also, an excellent yield of the baseassembly without stepped part may be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

The Figures described herein are used to provide a further understandingof the present disclosure and constitute a part of the presentdisclosure. The exemplary embodiments and descriptions of the presentdisclosure are used to illustrate the present disclosure and do notlimit the present disclosure, in which:

FIG. 1 is a schematic diagram of the terminal of the voice coil motor inthe prior art;

FIG. 2 is a schematic diagram of the base assembly of the voice coilmotor in the prior art;

FIG. 3 is a schematic diagram of the cutting process of the terminal ofthe voice coil motor in the prior art;

FIG. 4 is another schematic diagram of the cutting process of theterminal of the voice coil motor in the prior art;

FIG. 5 is a schematic diagram of the base assembly according to anembodiment of the present disclosure;

FIG. 6 is an exploded diagram of the base assembly according to anembodiment of the present disclosure;

FIG. 7 is a schematic diagram of the base body according to anembodiment of the present disclosure;

FIG. 8 is a schematic diagram of the lower elastic piece according to anembodiment of the present disclosure;

FIG. 9 is a schematic diagram of the first terminal according to anembodiment of the present disclosure;

FIG. 10 is a front view of the first terminal according to an embodimentof the present disclosure;

FIG. 11 is a schematic diagram of assembling the first terminal and thebase body according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of the cutting process of the firstterminal according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of the first terminal according toanother embodiment of the present disclosure;

FIG. 14 is a schematic diagram of the first terminal according to a yetembodiment of the present disclosure;

FIG. 15 is a schematic diagram of the first terminal according to a yetembodiment of the present disclosure;

FIG. 16 is a schematic diagram of the second terminal of an embodimentof the present disclosure;

FIG. 17 is a schematic diagram of the voice coil motor according to anembodiment of the present disclosure;

FIG. 18 is an exploded diagram of the voice coil motor according to anembodiment of the present disclosure;

FIG. 19 is a schematic diagram of the coil assembly according to anembodiment of the present disclosure; and

FIG. 20 is an exploded diagram of the coil assembly according to anembodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the objectives, technical solutions, and advantages ofthe present disclosure clearer, the technical solutions of the presentdisclosure will be described clearly and completely in conjunction withspecific embodiments and the Figures of the present disclosure.Obviously, the described embodiments are only a part of the embodimentsof the present disclosure, rather than all the embodiments. Based on theembodiments in the present disclosure, all other embodiments obtained bya person of ordinary skill in the art without creative work fall withinthe protection scope of this disclosure.

The following description is of the best-contemplated mode of carryingout the present disclosure. This description is made for the purpose ofillustrating the general principles of the present disclosure and shouldnot be taken in a limiting sense. The scope of the present disclosure isbest determined by reference to the appended claims.

Moreover, the terms “include”, “contain”, and any variation thereof areintended to cover a non-exclusive inclusion. Therefore, a process,method, object, or device that comprises a series of elements not onlyincludes these elements, but also comprises other elements not specifiedexpressly, or may include inherent elements of the process, method,object, or device. If no more limitations are made, an element limitedby “include a/an . . . ” does not exclude other same elements existingin the process, the method, the article, or the device which comprisesthe element.

FIGS. 5 to 11 respectively are a schematic diagram and an explodeddiagram of the base assembly, a schematic diagram of the base body, aschematic diagram of the lower elastic piece, a schematic diagram of thefirst terminal, a front view of the first terminal, and a schematicdiagram of assembling the first terminal and the base body of anembodiment of the present disclosure. The base assembly 1 includes abase body 10 having a first elastic piece connecting area 100, a lowerelastic piece 11 disposed on the first elastic piece connecting area100, and a first terminal 12 disposed in the base body 10. The firstterminal 12 has a first conductive part 120 disposed in the base body10; a first terminal connecting part 121 disposed on one side of thefirst conductive part 120 and extending toward a direction away from thefirst conductive part 120, wherein a part of the first terminalconnecting part 121 protrudes from the first elastic piece connectingarea 100 and is connected with the lower elastic piece 11; and anengaging part 122 disposed on one side of the first terminal connectingpart 121 and extending toward a direction away from the first terminalconnecting part 121.

In the present embodiment, the first terminal 12 is stably engaged inthe first elastic piece connecting area 100 through the engaging part122. In this way, the problem of warping of the terminal caused by thecutting process may be solved. Therefore, the design diversification andvolume reduction of the base assembly 1 may be achieved. Hereinafter,the elements mentioned above will be explained in detail to make thetechnical features of the present disclosure clearer.

As shown in FIG. 7, in some embodiments, the base body 10 may furtherhave a second elastic piece connecting area 101 and a stepped part 102,and the second elastic piece connecting area 101 is disposed on one sideof the stepped part 102. More specifically, the base body 10 has twofirst elastic piece connecting areas 100, two second elastic piececonnecting areas 101, and two stepped parts 102. The first elastic piececonnecting area 100 is disposed on the side of the base body 10 wherethe stepped part 102 is not disposed, and the second elastic piececonnecting area 101 is disposed on the side of the base body 10 wherethe stepped portion 102 is disposed. In other words, the terminal (ie,the first terminal 12) disposed in the first elastic piece connectingarea 100 needs to have an engaging part (ie, the engaging part 122) toavoid warping during the cutting process. On the other hand, theterminal (the second terminal 14 mentioned hereinafter) disposed in thesecond elastic piece connecting area 101 may not have an engaging part.The warping during the cutting process of the terminal without engagingpart is avoided through the cooperation of the stepped part 102 with thepressing jig. In some embodiments, the two first elastic piececonnecting areas 100 and the two second elastic piece connecting areas101 are respectively disposed at four corners of the base body 10.

As shown in FIG. 8, the number of lower elastic pieces 11 is two, andeach lower elastic piece 11 includes an elastic piece connecting part11A and two lower elastic piece parts 11B located at both ends of theelastic piece connecting part 11A. The lower elastic piece parts 11B hasa first connecting hole 110 and a second connecting hole 111. The firstconnecting hole 110 is used to connect the lower elastic piece 11 withthe first terminal connecting part 121 of the first terminal 12 or asecond terminal connecting part 141 of the second terminal 14. Thesecond connecting hole 111 is used to connect the lower elastic piece 11with the first elastic piece connecting area 100 or the second elasticpiece connecting area 101.

The lower elastic piece 11 and the first terminal 12 are taken as anexample. In some embodiments, the lower elastic piece 11 may be rivetedto the first elastic piece connecting area 100 through the firstconnecting hole 110. For example, the base assembly 1 may furtherinclude a connecting member 13 (as shown in FIG. 6), and the connectingmember 13 may be a rivet or an element with similar or identicalfunctions. In this way, the connecting member 13 may be inserted intothe first connecting hole 110 and fixes the lower elastic piece 11 tothe first elastic piece connecting area 100 through a hot rivetingprocess.

The lower elastic piece 11 and the first terminal 12 are taken as anexample. In some embodiments, the lower elastic piece 11 may be weldedto the first terminal connecting part 121 through the second connectinghole 111. For example, the lower elastic piece 11 and the first terminalconnecting part 121 may be fixedly connected by an adhesive containingmetal. Alternatively, the lower elastic piece 11 and the first terminalconnecting part 121 may also be directly heated so that the materialsthereof melt and diffuse into each other. Therefore, the lower elasticpiece 11 and the first terminal connecting part 121 may be fixedlyconnected to each other. Since electrical connection between the lowerelastic piece 11 and the first terminal connecting part 121 is needed,the size of the second connecting hole 111 may be adjusted according towelding requirements. Specifically, the larger the size of the secondconnecting hole 111, the larger space for welding (better fixingeffect), but the overlapping area of the lower elastic piece 11 and thefirst terminal connecting part 121 decreases (the resistivityincreases). Conversely, the smaller the size of the second connectinghole 111, the smaller space for welding (more difficult to fix), but theoverlapping area of the lower elastic piece 11 and the first terminalconnecting part 121 increases (the resistivity decreases).

On the other hand, the connection method of the lower elastic piece 11and the second terminal 14 is similar or the same as the connectionmethod between the lower elastic piece 11 and the first terminal 12, sothe detailed description is omitted.

As shown in FIG. 9, the first terminal 12 has the first conductive part120, the first terminal connecting part 121, and the engaging part 122.The first conductive part 120 is used to conduct electricity. The firstterminal connecting part 121 protrudes from the upper surface of thefirst elastic piece connecting area 100 and is used to connect the lowerelastic piece 11. The engaging part 122 is in the first elastic piececonnecting area 100. In the present embodiment, the number of theengaging parts 122 is two, and the two engaging parts are respectivelydisposed on opposite sides of the first terminal connecting part 121. Asshown in FIG. 10, in some embodiments, the angle θ between the engagingpart 122 and the plane where the first terminal connecting part 121 islocated is less than 90°. For example, the engaging part 122 and thefirst terminal connecting part 121 are located on the same plane in theinitial state, and the engaging part 122 is bent 60° with respect to thefirst terminal connecting part 121 by bending. Therefore, the angle θbetween the engaging part 122 and the plane where the first terminalconnecting part 121 is located is 60°. In some embodiments, the angle θmay be 15°, 30°, 45°, 60°, 75°, or a range of any combination of theforegoing values.

As shown in FIG. 11, in some embodiments, the first terminal 12 furtherhas a first cutting part 123, and the first cutting part 123 is disposedon the side of the first terminal connecting part 121 away from thefirst conductive part 120 and extends toward a direction away from thefirst terminal connecting part 121. A part of the first cutting part 123protrudes from the first elastic piece connecting area 100. For example,the initial state of the first cutting part 123 before being cut is astrip extending continually toward a direction away from the firstterminal connecting part (referring to strip P3 in FIG. 3). When thebase body 10 and the first terminal 12 are formed, the strip may befixed by a fixing jig to maintain the relative position of the firstterminal 12 and the base body 10 during the forming process. After theforming process, the strip is cut by a cutting jig, so as to a firstcutting part 123 slightly protruding from the first elastic piececonnecting area 100 is left.

FIG. 12 is a schematic diagram of the cutting process of the firstterminal of an embodiment of the present disclosure. As shown in thefigure, the first terminal 12 may have sufficient supporting force to bepressed by the cutting jig during the cutting process by disposing thefirst terminal 12 having the engaging part 122 in the presentdisclosure. Thus, reduction in product quality due to warping of thefirst terminal 12 may be avoided. It should be noted that the engagingpart 122 is used to improve the supporting force of the first terminal12 in the first elastic piece connecting area 100. Therefore, theengaging part 122 of the present disclosure is not limited to that shownin FIG. 9. In practical applications, the engaging part 122 may havedifferent sizes, shapes, or bending angles. That is, as long as thesupporting force of the first terminal 12 may be improved, differentaspects of the engaging parts are all within the scope of the presentdisclosure.

FIG. 13 is a schematic diagram of the first terminal according toanother embodiment of the present disclosure. As shown in the figure, insome embodiments, the number of the engaging parts 122 is two, and thetwo engaging parts 122 are respectively disposed on opposite sides ofthe first terminal connecting part 121. In addition, the two engagingparts 122 may respectively include a plurality of sub-engaging parts122A disposed at intervals. In this embodiment, the number of thesub-engaging parts 122A on one side of the first terminal connectingpart 121 is two, but the present disclosure is not limited thereto. Forexample, the number of the sub-engaging parts 122A on one side of thefirst terminal connecting part 121 may be three, four, five, or morethan five. In addition, each sub-engaging part 122A may also have adifferent shape, size, or bending angle. The engagement of the firstterminal 12 may be more stable by the plurality of sub-engaging parts122A.

FIG. 14 is a schematic diagram of a first terminal according to a yetembodiment of the present disclosure. As shown in the figure, in someembodiments, the number of the engaging part 122 may be one tocorrespond to the base bodies 10 with different shapes or sizes.

FIG. 15 is a schematic diagram of the first terminal according to a yetembodiment of the present disclosure. As shown in the figure, in someembodiments, the number of the engaging part 122 may be one tocorrespond to the base bodies 10 with different shapes or sizes. Inaddition, the engaging part 122 may include a plurality of sub-engagingparts 122B, and the plurality of sub-engaging parts 122B are disposed onone side of the first terminal connecting part 121 at intervals. In thepresent embodiment, the number of the sub-engaging part 122B on one sideof the first terminal connecting part 121 is two, but the presentdisclosure is not limited thereto. For example, the number of thesub-engaging part 122B on one side of the first terminal connecting part121 may be three, four, five, or more than five. In addition, eachsub-engaging part 122B may also have a different shape, size or bendingangle. The engagement of the first terminal 12 may be more stable by theplurality of sub-engaging parts 122B.

FIG. 16 is a schematic diagram of the second terminal according to anembodiment of the present disclosure. As shown in the figure, in someembodiments, the base assembly 1 may further include the second terminal14. The second terminal 14 is disposed in the base body 10. Morespecifically, the second terminal 14 is disposed on the side of the basebody 10 close to the stepped part 102. The second terminal 14 has asecond conductive part 140, the second terminal connecting part 141, anda second cutting part 142. The second conductive part 140 is disposed inthe base body 10. The second terminal connecting part 141 is disposed onone side of the second conductive part 140 and extends toward adirection away from the second conductive part 140. A part of the secondterminal connecting part 141 protrudes from the second elastic piececonnecting area 101 and is connected to the lower elastic piece 11. Thesecond cutting part 142 is disposed on one side of the second conductivepart 140 and extends toward a direction away from the second conductivepart 140. A part of the second cutting part 142 protrudes from thestepped part 102 of the base body 10.

FIGS. 17 to 20 respectively are a schematic diagram and an explodeddiagram of a voice coil motor, and a schematic diagram and an explodeddiagram of a coil assembly according to an embodiment of the presentdisclosure. As shown in the figure, the voice coil motor VCM includes abase assembly 1 and a coil assembly 2. In the present embodiment, thebase assembly 1 may be similar or the same as the base assembly 1 in theembodiment mentioned above, so the detailed description is omitted.

The coil assembly 2 is disposed on the base assembly 1 and includes amagnet 20, a conductive pillar 21, a frame 22, a coil 23, and an upperelastic piece 24. The number of magnets 20 is four, and the four magnetsare respectively disposed on the two first elastic piece connectingareas 100 and the two second elastic piece connecting areas 101. Theconductive pillar 21 is electrically connected to the lower elasticpiece 11. The frame 22 is disposed on the base body 10, and the frame 22is recessed to form an annular groove 220. The coil 23 is disposed inthe annular groove 220 and is electrically connected to the lowerelastic piece 11 through the conductive pillar 21. The upper elasticpiece 24 is disposed on the frame 22.

In some embodiments, the voice coil motor VCM further includes a case 3covering the base assembly 1 and the coil assembly 2. The case 3 is usedto prevent the base assembly 1 and the coil assembly 2 from water ordust. Therefore, the reduction of the life of the components may beavoided.

Refer to FIG. 9. In some embodiments, the coil 23, the conductive pillar21, the lower elastic piece 11, and the first terminal 12 form a currentpath. More specifically, when the voice coil motor VCM includes thefirst terminal 12 and the second terminal 14, the first terminal 12 andthe second terminal 14 may have input/output terminals, respectively.That is, the first terminal 12 and the second terminal 14 arerespectively responsible for the input and output of current. Wherein,the input/output terminal, the coil 23, the conductive pillar 21, thelower elastic piece 11, and a power supply form a loop, and the loop isused with the magnet 20 to move a lens (not shown) at the center of thevoice coil motor VCM. In other words, the current enters the coil 23from the first terminal 12 or the second terminal 14 along the lowerelastic piece 11 and the conductive pillar 21 to form an electric field.A magnetic field generated by the electric field mentioned above mayinteract with the magnet 20 and move the lens at the center of the voicecoil motor VCM.

In summary, the first terminal is fixed in the base body by the engagingpart. As a result, in the case of without pressing by using the pressingjig, the first terminal may still be cut stably and prevented fromwarping. That is, the base assembly of the present disclosure is small.Also, an excellent yield of the base assembly without stepped part maybe achieved.

A person of ordinary skill in the art will understand current and futuremanufacturing processes, method and step from the content disclosed insome embodiments of the present disclosure, as long as the current orfuture manufacturing processes, method, and step performs substantiallythe same functions or obtain substantially the same results as thepresent disclosure. Therefore, the scope of the present disclosureincludes the above-mentioned manufacturing process, method, and steps.

The above descriptions are only examples of this application and are notintended to limit this application. This disclosure may have variousmodifications and changes for a person of ordinary skill in the art. Anymodification, equivalent replacement, improvement, etc. made within thespirit and principle of this application shall be included in the scopeof the claims of this disclosure.

What is claimed is:
 1. A base assembly of voice coil motor, comprising:a base body having a first elastic piece connecting area; a lowerelastic piece disposed on the first elastic piece connecting area; and afirst terminal disposed in the base body, wherein the first terminalhas: a first conductive part disposed in the base body; a first terminalconnecting part disposed on one side of the first conductive part andextending toward a direction away from the first conductive part,wherein a part of the first terminal connecting part protrudes from thefirst elastic piece connecting area and is connected with the lowerelastic piece; and an engaging part disposed on one side of the firstterminal connecting part and extending toward a direction away from thefirst terminal connecting part.
 2. The base assembly of voice coil motoraccording to claim 1, wherein the first terminal further has a firstcutting part disposed on one side of the first terminal connecting partaway from the first conductive part and extending toward a directionaway from the first terminal connecting part, and a part of the firstcutting part protrudes from the first elastic piece connecting area. 3.The base assembly of voice coil motor according to claim 1, wherein theengaging part comprises a plurality of sub-engaging parts, and theplurality of sub-engaging parts are disposed at intervals on one side ofthe first terminal connecting part.
 4. The base assembly of voice coilmotor according to claim 1, wherein the engaging part is provided intwo, and the two engaging parts are respectively disposed on oppositesides of the first terminal connecting part.
 5. The base assembly ofvoice coil motor according to claim 4, wherein the two engaging partsrespectively comprise a plurality of sub-engaging parts disposed atintervals.
 6. The base assembly of voice coil motor according to claim1, wherein an angle between the engaging part and a plane where thefirst terminal connecting part is located is less than 90°.
 7. The baseassembly of voice coil motor according to claim 1, wherein the base bodyfurther has a second elastic piece connecting area and a stepped part,and the second elastic piece connecting area is disposed on one side ofthe stepped part.
 8. The base assembly of voice coil motor according toclaim 7, further comprising a second terminal disposed in the base body,wherein the second terminal has: a second conductive part disposed inthe base body; a second terminal connecting part disposed on one side ofthe second conductive part and extending toward a direction away fromthe second conductive part, wherein a part of the second terminalconnecting part protrudes from the second elastic piece connecting areaand is connected with the lower elastic piece; and a second cutting partdisposed on one side of the second conductive part and extending towarda direction away from the second conductive part, and a part of thesecond cutting part protrudes from the stepped part of the base body. 9.A voice coil motor, comprising: the base assembly according to any oneof claim 1; a coil assembly disposed on the base assembly, wherein thecoil assembly comprises: a magnet disposed on the first elastic piececonnecting area; a conductive pillar electrically connected to the lowerelastic piece; a frame disposed on the base body, wherein the frame isrecessed to form an annular groove; a coil disposed in the annulargroove and electrically connected to the conductive pillar; and an upperelastic piece disposed on the frame.
 10. The voice coil motor accordingto claim 9, wherein the coil, the conductive pillar, the lower elasticpiece, and the first terminal form a current path.
 11. The voice coilmotor according to claim 9, wherein the first terminal further has afirst cutting part disposed on one side of the first terminal connectingpart away from the first conductive part and extending toward adirection away from the first terminal connecting part, and a part ofthe first cutting part protrudes from the first elastic piece connectingarea.
 12. The voice coil motor according to claim 9, wherein theengaging part comprises a plurality of sub-engaging parts, and theplurality of sub-engaging parts are disposed at intervals on one side ofthe first terminal connecting part.
 13. The voice coil motor accordingto claim 9, wherein the engaging part is provided in two, and the twoengaging parts are respectively disposed on opposite sides of the firstterminal connecting part.
 14. The voice coil motor according to claim13, wherein the two engaging parts respectively comprise a plurality ofsub-engaging parts disposed at intervals.
 15. The voice coil motoraccording to claim 9, wherein an angle between the engaging part and aplane where the first terminal connecting part is located is less than90°.
 16. The voice coil motor according to claim 9, wherein the basebody further has a second elastic piece connecting area and a steppedpart, and the second elastic piece connecting area is disposed on oneside of the stepped part.
 17. The voice coil motor according to claim16, wherein the base assembly further comprises a second terminaldisposed in the base body, wherein the second terminal has: a secondconductive part disposed in the base body; a second terminal connectingpart disposed on one side of the second conductive part and extendingtoward a direction away from the second conductive part, wherein a partof the second terminal connecting part protrudes from the second elasticpiece connecting area and is connected with the lower elastic piece; anda second cutting part disposed on one side of the second conductive partand extending toward a direction away from the second conductive part,and a part of the second cutting part protrudes from the stepped part ofthe base body.